US2188258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing valve
Assignee: Crane Co
•
Filing: 1937-04-21
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Granted: 1940-01-23
•
Expires: 1957-04-21
Abstract
No abstract record available.
Inventors
- 👤 Roy H Zinkil
- 👤 Edward A Fredrickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:58
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/62; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6969; Y10T137/6988; Y10T137/8593; Y10T137/86928; Y10T137/86992; Y10T137/87; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-01-22 | 1943-07-24 | 1944-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-01-22 | 1947-07-24 | 1948-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-01-22 | 1951-07-24 | 1952-01-23 | $7700.00 | Window Closed / Lapsed |